$.fn.setSlider = function () {
    var scrollpane = $(this);
    var scrollcontent = scrollpane.find('.scroll-content');
    var difference = scrollcontent.height() - scrollpane.height();
    if (difference > 0) {
        var proportion = difference / scrollcontent.height();
        var handleHeight = Math.round((1 - proportion) * scrollpane.height()-150);
        handleHeight -= handleHeight % 2;
        scrollpane.append('<\div class="slider-wrap"><\div class="slider-vertical"><\/div><\/div>');
        var sliderwrap = $('.slider-wrap', scrollpane);

        sliderwrap.height(scrollpane.height() - 120).css('left', scrollpane.width() - 15);
        sliderwrap.find('.slider-vertical').slider({
            orientation: 'vertical',
            range: 'max',
            min: 0,
            max: 100,
            value: 100,
            slide: function (event, ui) {
                var topValue = -((100 - ui.value) * difference / 100);
                scrollcontent.css({ top: topValue });
            }
        });
        sliderwrap.find(".ui-slider-handle").css({ height: handleHeight, 'margin-bottom': -0.5 * handleHeight });
        var origSliderHeight = sliderwrap.find('.slider-vertical').height();
        var sliderHeight = origSliderHeight - handleHeight;
        var sliderMargin = (origSliderHeight - sliderHeight) * 0.5;
        sliderwrap.find(".ui-slider").css({ height: sliderHeight, 'margin-top': sliderMargin });
        sliderwrap.find(".ui-slider-range").css({ top: -sliderMargin });
        function onMouseWheel(delta, event) {
            var speed = 10;
            var sliderVal = sliderwrap.find('.slider-vertical').slider("value");
            sliderVal += (delta * speed);
            sliderwrap.find('.slider-vertical').slider("value", sliderVal);
            var topValue = -((100 - sliderVal) * difference / 100);
            if (topValue > 0)
                topValue = 0;
            if (Math.abs(topValue) > difference)
                topValue = (-1) * difference;
            scrollcontent.css({ top: topValue });
            event.preventDefault();
        }
        scrollcontent.bind({
            mousewheel: function (event, delta) {
                onMouseWheel(delta, event);
            }
        });
        scrollpane.next().bind({
            mousewheel: function (event, delta) {
                onMouseWheel(delta, event);
            }
        });
    }
}